Triumph Norton BSA Standard 19-inch X 3.25-inch/3.50-inch Inner Tube(s) PN# 37-0193

Due to past performance and their high quality we use only BikeMaster inner tubes in our shop. This BikeMaster tube will fit 3.25/3.50″ x 19″ tires only.

Keep your vintage Triumph, Norton and BSA motorcycles safe and reliable with this standard 19-inch inner tube, correctly sized for 3.25-19 and 3.50-19 tires and supplied under part number 37-0193. Designed for tube-type rims commonly used on classic British bikes, this tube is a practical replacement for old, cracked or patched originals that can compromise performance and safety.

Key Features

• Standard 19-inch motorcycle inner tube sized for 3.25-19 and 3.50-19 tires, suitable for many Triumph, Norton and BSA models.
  
• Supplied under PN# 37-0193 for easy cross-reference with workshop manuals, parts lists and online inventory systems.
  
• Durable rubber construction engineered for consistent air retention and long service life on classic tube-type rims.
  
• Ideal for vintage restorations, routine tire changes and preventative maintenance on classic British motorcycles.
  

Fitment Information

• This inner tube is intended for 19-inch motorcycle rims fitted with 3.25-19 or 3.50-19 tires. Common applications include front wheels and some rear wheels on Triumph, Norton and BSA machines that use these traditional tire sizes. Always confirm your wheel diameter, tire size markings and valve stem style before installation to ensure proper fitment on your specific motorcycle.
  

Usage and Installation Tips

• Before mounting the new inner tube, inspect the rim, spokes, rim strip and inside of the tire for rust, sharp edges or embedded debris that could puncture the tube. Use quality tire levers, take care not to pinch the tube during installation, and inflate slowly to the tire manufacturer’s recommended pressure. Regularly checking tire condition and pressure will help maximize tube life and maintain safe, predictable handling on your vintage Triumph, Norton or BSA.

The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.